This experimental work studies the dynamical and thermal behavior of a turbulent natural convection flow of air occurring in a cubic cavity with an inner and partially heated obstacle, at Ra=1.4 x 10^9 (based on the inner-block height).
The top, bottom, front and back walls of the cavity are adiabatic and the other side walls are at imposed uniform temperature. The experimental setup was designed in order to remain in the domain of validity of the Boussinesq approximation and to avoid radiative effects.
Velocity and temperature measurements are carried out using Particle Image Velocimetry and micro-thermocouples.
Boundary layer flows are observed in both vertical channels.
Although 2D simulations can be performed in the symmetry plane, preliminary calculations seem to show that significant 3D effects influence the flow in this plane.
The configuration is described in details in the following paper:
– A. Weppe, F. Moreau, and D. Saury. Experimental investigation of a turbulent natural convection flow in a cubic cavity with an inner obstacle partially heated. Int. J. Heat Mass Tran., 194:123052, 2022. doi: 10.1016/j.ijheatmasstransfer.2022.123052
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